Here is the full list of all 49 Attack Of UNDO Zai achievements.
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Complete Ancient Lab.
Complete Ancient Lab with at least 1 minute remaining.
Complete Ancient Lab with at least 2 minutes 30 seconds remaining.
Complete Ancient Lab with at least 3 minutes 30 seconds remaining.
Defeat 50 enemies total on Ancient Lab.
Defeat 80 enemies total on Ancient Lab.
Defeat 120 enemies total on Ancient Lab.
Defeat 200 enemies total on Ancient Lab.
Survive for at least 3 minutes in Survival Mode on Ancient Lab.
Survive for at least 6 minutes in Survival Mode on Ancient Lab.
Survive for at least 10 minutes in Survival Mode on Ancient Lab.
Survive for at least 15 minutes in Survival Mode on Ancient Lab.
Complete Cutlass Cove.
Complete Cutlass Cove with at least 1 minute remaining.
Complete Cutlass Cove with at least 2 minutes 30 seconds remaining.
Complete Cutlass Cove with at least 3 minutes 30 seconds remaining.
Defeat 50 enemies total on Cutlass Cove.
Defeat 80 enemies total on Cutlass Cove.
Defeat 120 enemies total on Cutlass Cove.
Defeat 200 enemies total on Cutlass Cove.
Survive for at least 3 minutes in Survival Mode on Cutlass Cove.
Survive for at least 6 minutes in Survival Mode on Cutlass Cove.
Survive for at least 10 minutes in Survival Mode on Cutlass Cove.
Survive for at least 15 minutes in Survival Mode on Cutlass Cove.
Complete Snowball Fight.
Complete Snowball Fight with at least 1 minute remaining.
Complete Snowball Fight with at least 2 minutes 30 seconds remaining.
Complete Snowball Fight with at least 3 minutes 30 seconds remaining.
Defeat 50 enemies total on Snowball Fight.
Defeat 80 enemies total on Snowball Fight.
Defeat 120 enemies total on Snowball Fight.
Defeat 200 enemies total on Snowball Fight.
Survive for at least 3 minutes in Survival Mode on Snowball Fight.
Survive for at least 6 minutes in Survival Mode on Snowball Fight.
Survive for at least 10 minutes in Survival Mode on Snowball Fight.
Survive for at least 15 minutes in Survival Mode on Snowball Fight.
Complete Space Odyssey.
Complete Space Odyssey with at least 1 minute remaining.
Complete Space Odyssey with at least 2 minutes 30 seconds remaining.
Complete Space Odyssey with at least 3 minutes 30 seconds remaining.
Defeat 50 enemies total on Space Odyssey.
Defeat 80 enemies total on Space Odyssey.
Defeat 120 enemies total on Space Odyssey.
Defeat 200 enemies total on Space Odyssey.
Survive for at least 3 minutes in Survival Mode on Space Odyssey.
Survive for at least 6 minutes in Survival Mode on Space Odyssey.
Survive for at least 10 minutes in Survival Mode on Space Odyssey.
Survive for at least 15 minutes in Survival Mode on Space Odyssey.